If the perimeter of the triangle is 90, what is the value of x

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Can someone answer this question? : )